The Congress-DMK combine has already reached a seat- sharing pact and AIADMK has announced candidates for all 30 seats, while the five-party People's Welfare Alliance has also finalised the number of seats to be contested by them.
But Chief Minister N Rangasamy is yet to announce the strategy of his All India N R Congress and is ona pilgrimage for the last two weeks visiting various shrines in Tamil Nadu seeking divine blessings.
AINRC stormed to power in 2011 Assembly polls in alliance with AIADMK months after it was founded by Rangasamy, who broke away from Congress.
However, the alliance did not last long as Rangasamy ditched the AIADMK andformed the government with the outside support of the lone Independent member V M C Sivakumar.
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Incidentally, AIADMK had won the recent Rajya Sabha election from the Union Territory with the support of AINRC, as Rangasamy agreed for the understanding facing a rebellion in his party then.
The run-up to the polls also witnessed some key personalities switching their loyalties to other parties.
Former Home Minister P Kannan, who had contested the polls in the paston Congress ticket, has joined the AIADMK. He has been fielded in Raj Bhavan constituency, where Congress veteran and former union minister V Narayanasamy or senior leader K Lakshmi Narayanan is likely to contest.
Sivakumar, who annexed the T R Pattinam seat in Karaikal as an Independent in the 2011 polls, has also joined the AIADMK and seeks re-election from the same segment.